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Finding the Fourth Proportional to 68,809,623.60, 103,214,435.40 and 27,888,666.60

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Solution

The fourth proportional to 68,809,623.60, 103,214,435.40 and 27,888,666.60 is: 41,832,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809,623.60 : 103,214,435.40 = 27,888,666.60 : x
  2. Step 2: Convert to fraction form
    68,809,623.60/103,214,435.40 = 27,888,666.60/x
  3. Step 3: Cross multiply
    68,809,623.60x = 103,214,435.40 × 27,888,666.60
  4. Step 4: Simplify right side
    68,809,623.60x = 2,878,512,977,177,838
  5. Step 5: Solve for x
    x = 2,878,512,977,177,838/68,809,623.60
  6. Step 6: Final answer
    x = 41,832,999.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.